If there is no rtwsta_link found in rtw89_core_send_nullfunc(), allocated
skb is leaked.  Free it on the error handling path.

Found by Linux Verification Center (linuxtesting.org).

Fixes: a8ba4acab7db ("wifi: rtw89: send nullfunc based on the given link")
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
---

v3: - use dev_kfree_skb_any() directly on error handling path without
      extra goto complexity  (Zong-Zhe)

 drivers/net/wireless/realtek/rtw89/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/realtek/rtw89/core.c b/drivers/net/wireless/realtek/rtw89/core.c
index 1f44c7fc1c5e..917b2adede61 100644
--- a/drivers/net/wireless/realtek/rtw89/core.c
+++ b/drivers/net/wireless/realtek/rtw89/core.c
@@ -3961,6 +3961,7 @@ int rtw89_core_send_nullfunc(struct rtw89_dev *rtwdev, struct rtw89_vif_link *rt
 	rtwsta_link = rtwsta->links[rtwvif_link->link_id];
 	if (unlikely(!rtwsta_link)) {
 		ret = -ENOLINK;
+		dev_kfree_skb_any(skb);
 		goto out;
 	}
 
-- 
2.51.0